We have measured the differential cross section for the inclusive production of psi(2S) mesons decaying to mu+mu- that were produced in prompt or B-decay processes from p anti-p collisions at 1.96 TeV. These measurements have been made using a data set from an integrated luminosity of 1.1 fb-1 collected by the CDF II detector at Fermilab. For events with transverse momentum p(t)(psi(2S)) > 2 GeV/c and rapi+dity |y(psi(2S)) > 2 GeV/c and rapi+dity |y|psi(2S))| < 0.6 we measure the integrated inclusive cross section sigma(p anti-p --> psi(2S)X) . Br(psi(2S) --> mu+mu-) to be 3.29 +/- 0.04(stat.) +/- 0.32(syst.) nb.
A. Castro, M. Deninno, P. Mazzanti, N. Moggi, F. Rimondi, F. Semeria, et al. (2009). Production of psi(2S) Mesons in p anti-p Collisions at 1.96 TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 80, 031103-1-031103-9 [10.1103/PhysRevD.80.031103].
Production of psi(2S) Mesons in p anti-p Collisions at 1.96 TeV
CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MOGGI, NICCOLO';RIMONDI, FRANCO;ZUCCHELLI, STEFANO
2009
Abstract
We have measured the differential cross section for the inclusive production of psi(2S) mesons decaying to mu+mu- that were produced in prompt or B-decay processes from p anti-p collisions at 1.96 TeV. These measurements have been made using a data set from an integrated luminosity of 1.1 fb-1 collected by the CDF II detector at Fermilab. For events with transverse momentum p(t)(psi(2S)) > 2 GeV/c and rapi+dity |y(psi(2S)) > 2 GeV/c and rapi+dity |y|psi(2S))| < 0.6 we measure the integrated inclusive cross section sigma(p anti-p --> psi(2S)X) . Br(psi(2S) --> mu+mu-) to be 3.29 +/- 0.04(stat.) +/- 0.32(syst.) nb.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
